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《Energy Conservation Technology》 2009-01
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A Method for Improving Flow Distribution in Solar Water-heating System

BEI Yu,HU Ming-fu,GUO Li (Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650224,China)  
Flow maldistribution in solar water-heating system with collctor arrays has a serious influence on the thermal efficiency,so it is necessary to improve the flow rate distribution.The results and causes of flow distribution in system with natural circulation and pump circulation have been theoretically analysed respectively.Analysis and experimental data show that maldistribution commonly exists in pump drived system and always leads to lower efficiency.In order to solve the problem,appropriate measures should be taken,such as properly designing the structure and size of collectors,reducing the scale of collector arrays and chanaging resistance characteristics in manifolds.Among them,the last one is easier to realise in engineering.
【Fund】: 校青年基金资助项目(项目编号:KKZ2200805045)
【CateGory Index】: TU822
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